

#include <sys/ras.h>
#include <machine/asm.h>

ENTRY(_atomic_cas_up)
	.hidden	_C_LABEL(_atomic_cas_up)
	mov	r3, r0
	.align	0
RAS_START_ASM_HIDDEN(_atomic_cas)
	ldr	r0, [r3]
	cmp	r0, r1
#if defined(__thumb__)
	beq	1f
#else
	streq	r2, [r3]
#endif
	.align	0
RAS_END_ASM_HIDDEN(_atomic_cas)
1:	RET
END(_atomic_cas_up)

#if defined(__HAVE_ASM_ATOMIC_CAS_64_UP)
ARM_ENTRY(_atomic_cas_64_up)
	push	{r4-r5}
	mov	ip, r0
	ldrd	r4, r5, [sp, #8]
	.align	0
RAS_START_ASM_HIDDEN(_atomic_cas_64)
	ldrd	r0, r1, [ip]
	cmp	r0, r2
	cmpeq	r1, r3
	strdeq	r4, r5, [ip]
	.align	0
RAS_END_ASM_HIDDEN(_atomic_cas_64)
1:	pop	{r4-r5}
	bx	lr
END(_atomic_cas_64_up)
#endif /* __HAVE_ASM_ATOMIC_64_UP */

ENTRY(_atomic_cas_16_up)
	mov	r3, r0
	.align	0
RAS_START_ASM_HIDDEN(_atomic_cas_16)
	ldrh	r0, [r3]
	cmp	r0, r1
#if defined(__thumb__)
	beq	1f
#else
	strheq	r2, [r3]
#endif
	.align	0
RAS_END_ASM_HIDDEN(_atomic_cas_16)
1:	RET
END(_atomic_cas_16_up)

ENTRY(_atomic_cas_8_up)
	mov	r3, r0
	.align	0
RAS_START_ASM_HIDDEN(_atomic_cas_8)
	ldrb	r0, [r3]
	cmp	r0, r1
#if defined(__thumb__)
	beq	1f
#else
	strbeq	r2, [r3]
#endif
	.align	0
RAS_END_ASM_HIDDEN(_atomic_cas_8)
1:	RET
END(_atomic_cas_8_up)
